It might help if your were more specific about the pain and how often you ride. If you've done only a few rides and your butt under your sit bones (ischial tuberosities) hurt, riding more on the seat youhave is likely to be the cure - but my guess is that's not the problem.
If it's soft tissue that hurts, a cut-out may be in order - but there are different cutouts, so finding one that works is trial and error. If it's chafing, that will probably call for a different seat, but you're back to trial and error and a wider choice.of seats, cutouts and non-cutouts - and the fix may actually be different cycling shorts. Etc., etc. etc.
If you tilt the nose down, make sure you don't tilt it so much that you have to ride with too much force on your hands/elbows/arms or that you keep sliding forward.